审计日志签名

src/main/java/com/cisd/tms/modules/log/service/OperationAuditService.java

@@ -12,7 +12,14 @@ import com.cisd.tms.modules.log.enums.*;
 import com.cisd.tms.modules.log.repository.OperationAuditLogRepository;
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.RequiredArgsConstructor;
+import org.bouncycastle.asn1.*;
+import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
+import org.bouncycastle.jce.ECNamedCurveTable;
 import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.jce.spec.ECParameterSpec;
+import org.bouncycastle.jce.spec.ECPublicKeySpec;
+import org.bouncycastle.openssl.PEMParser;
+import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
 import org.bouncycastle.util.encoders.Hex;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -21,12 +28,17 @@ import org.springframework.core.annotation.AnnotatedElementUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.web.method.HandlerMethod;
 
+import java.io.StringReader;
+import java.math.BigInteger;
 import java.nio.charset.StandardCharsets;
+import java.security.KeyFactory;
 import java.security.PublicKey;
 import java.security.Security;
 import java.security.Signature;
 import java.security.spec.X509EncodedKeySpec;
 import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Arrays;
 import java.util.Base64;
 import java.util.List;
 import java.util.UUID;
@@ -36,7 +48,13 @@ import java.util.UUID;
 public class OperationAuditService {
 
     private static final String PROVIDER = "BC";
-    private static final String SIGNATURE_ALGO = "SM3withSM2";
+    private static final String SM2_CURVE = "sm2p256v1";
+
+    private static final String SIGNATURE_ALGORITHM = "SM3withSM2";
+    private static final int GM0018_ECCREF_PUBLIC_KEY_LENGTH = 132;
+    private static final int GM0018_ECCREF_COMPONENT_LENGTH = 64;
+    private static final int SM2_COORDINATE_LENGTH = 32;
+
     private static final String ATTR_ROLE_CODE = "CURRENT_ROLE_CODE";
     private static final String ATTR_AUTH_LEVEL = "CURRENT_AUTH_LEVEL";
 
@@ -191,14 +209,17 @@ public class OperationAuditService {
             throw new IllegalArgumentException("logId不能为空");
         }
 
+
         OperationAuditLogEntity existLog = operationAuditLogRepository.findByLogId(logId)
                 .orElseThrow(() -> new BizException(ErrorCode.VALIDATE_FAILED.getCode(), "未找到该logId"));
 
         if (!AuditStatus.PENDING.equals(existLog.getAuditStatus())) {
             throw new BizException(ErrorCode.BIZ_ERROR.getCode(), "该日志已审计，禁止重复操作");
         }
-
+        String d = buildSignValueSource(existLog, req.getAuditResult());
+        System.out.println(d);
         String auditSign = trim(req.getAuditSign());
+
         if (auditSign.isEmpty()){
             throw new IllegalArgumentException("签名值不能为空");
         }
@@ -214,7 +235,7 @@ public class OperationAuditService {
         RoleUkeyBindingEntity roleUkeyBindingEntity = list.get(0);
         String publicKey = roleUkeyBindingEntity.getUkeyPubkey();
         try{
-            verifySm2Signature(signValueSource, auditSign, publicKey);
+            verifySm2Signature(publicKey, signValueSource, auditSign);
         } catch (Exception e){
             throw new BizException(ErrorCode.BIZ_ERROR.getCode(), e.getMessage());
         }
@@ -240,57 +261,294 @@ public class OperationAuditService {
 
 
     private static String buildSignValueSource(OperationAuditLogEntity existLog, AuditResult auditResult) {
-        String signValueSource = trim(existLog.getLogId()) + "_" +
+        String signValueSource = existLog.getLogId() + "_" +
                 existLog.getOperatorRoleCode() + "_" +
                 existLog.getOperatorAuthLevel() + "_" +
                 existLog.getModuleCode() + "_" +
                 existLog.getActionType() + "_" +
-                trim(existLog.getRemoteIp()) + "_" +
+                existLog.getRemoteIp() + "_" +
                 existLog.getOperationResult() + "_" +
-                trim(existLog.getSummary()) + "_" +
-                trim(existLog.getErrorMessage()) + "_" +
+                existLog.getSummary() + "_" +
+                existLog.getErrorMessage() + "_" +
                 existLog.getAuditStatus() + "_" +
                 auditResult + "_" +
-                trim(existLog.getSignValue()) + "_" +
-                existLog.getOccurredAt();
+                existLog.getSignValue() + "_" +
+                DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").format(existLog.getOccurredAt());
 
         return signValueSource;
     }
 
 
-    public boolean verifySm2Signature(String data, String signatureBase64, String publicKeyBase64) {
+    public void verifySm2Signature(String pubKey, String data, String sign) {
         try {
-            byte[] keyBytes = Base64.getDecoder().decode(publicKeyBase64);
-            X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);
-            java.security.KeyFactory keyFactory = java.security.KeyFactory.getInstance("EC", PROVIDER);
-            PublicKey publicKey = keyFactory.generatePublic(keySpec);
+            PublicKey publicKey = parsePublicKey(pubKey);
 
-            Signature signature = Signature.getInstance(SIGNATURE_ALGO, PROVIDER);
+            if (data == null || data.isBlank()) {
+                throw new IllegalArgumentException("data不能为空");
+            }
+
+            byte[] signatureBytes = decodeSignature(sign);
+
+//            String signData = sm3Hex(loginSignData.getBytes(StandardCharsets.UTF_8));
+            Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM, PROVIDER);
             signature.initVerify(publicKey);
+
+
             signature.update(data.getBytes(StandardCharsets.UTF_8));
-            byte[] signatureBytes = Base64.getDecoder().decode(signatureBase64);
-            return signature.verify(signatureBytes);
-        } catch (Exception e) {
-            throw new RuntimeException("SM2验签失败", e);
+
+            if (!signature.verify(signatureBytes)) {
+                throw new BizException(
+                        ErrorCode.UNAUTHORIZED.getCode(),
+                        "sm2验签失败"
+                );
+            }
+
+        } catch (BizException ex) {
+            throw ex;
+        } catch (IllegalArgumentException ex) {
+            throw new BizException(ErrorCode.VALIDATE_FAILED.getCode(), ex.getMessage());
+        } catch (RuntimeException ex) {
+            throw new BizException(
+                    ErrorCode.UNAUTHORIZED.getCode(),
+                    "signature verification 执行失败"
+            );
+        } catch (Exception ex) {
+            throw new BizException(
+                    ErrorCode.UNAUTHORIZED.getCode(),
+                    "signature verification 执行失败"
+            );
         }
     }
 
-    private byte[] decodeBlob(String value, String message) {
-        String normalized = value == null ? "" : value.trim();
-        if (normalized.isEmpty()) {
-            throw new BizException(ErrorCode.VALIDATE_FAILED.getCode(), message);
+
+
+    private byte[] decodeSignature(String value) {
+        if (value == null || value.isBlank()) {
+            throw new IllegalArgumentException("signature不能为空");
         }
-        if (normalized.matches("(?i)^[0-9a-f]+$") && normalized.length() % 2 == 0) {
-            return Hex.decode(normalized);
+
+        byte[] decoded = decodeHexOrBase64(normalize(value), "签名无效");
+
+        if (isDerSignature(decoded)) {
+            return decoded;
         }
+
+        if (decoded.length == GM0018_ECCREF_COMPONENT_LENGTH * 2) {
+            return rawRsToDer(gm0018SignatureToRawRs(decoded));
+        }
+
+        if (decoded.length == 64) {
+            return rawRsToDer(decoded);
+        }
+
+        throw new IllegalArgumentException("签名无效");
+    }
+
+
+    private PublicKey parsePublicKey(String value) throws Exception {
+        String trimmed = value == null ? "" : value.trim();
+
+        if (trimmed.isEmpty()) {
+            throw new IllegalArgumentException("公钥无效");
+        }
+
+        if (trimmed.contains("BEGIN")) {
+            return parsePemPublicKey(trimmed);
+        }
+
+        String normalized = normalize(trimmed);
+        byte[] decoded = decodeHexOrBase64(normalized, "公钥无效");
+
         try {
-            return Base64.getDecoder().decode(normalized);
-        } catch (IllegalArgumentException ex) {
-            throw new BizException(ErrorCode.VALIDATE_FAILED.getCode(), message);
+            return KeyFactory
+                    .getInstance("EC", PROVIDER)
+                    .generatePublic(new X509EncodedKeySpec(decoded));
+        } catch (Exception ignored) {
+            return parseUncompressedPointPublicKey(toPointBytes(decoded));
         }
     }
 
 
+    private PublicKey parsePemPublicKey(String pemContent) throws Exception {
+        try (PEMParser parser = new PEMParser(new StringReader(pemContent))) {
+            Object parsed = parser.readObject();
+
+            if (!(parsed instanceof SubjectPublicKeyInfo publicKeyInfo)) {
+                throw new IllegalArgumentException("公钥无效");
+            }
+
+            return new JcaPEMKeyConverter()
+                    .setProvider(PROVIDER)
+                    .getPublicKey(publicKeyInfo);
+        }
+    }
+
+    private PublicKey parseUncompressedPointPublicKey(byte[] pointBytes) throws Exception {
+        if (pointBytes.length == 64) {
+            byte[] rawPointBytes = pointBytes;
+            pointBytes = new byte[65];
+            pointBytes[0] = 0x04;
+            System.arraycopy(rawPointBytes, 0, pointBytes, 1, rawPointBytes.length);
+        }
+
+        if (pointBytes.length != 65 || pointBytes[0] != 0x04) {
+            throw new IllegalArgumentException("公钥无效");
+        }
+
+        ECParameterSpec parameterSpec = ECNamedCurveTable.getParameterSpec(SM2_CURVE);
+
+        ECPublicKeySpec publicKeySpec = new ECPublicKeySpec(
+                parameterSpec.getCurve().decodePoint(pointBytes),
+                parameterSpec
+        );
+
+        return KeyFactory
+                .getInstance("EC", PROVIDER)
+                .generatePublic(publicKeySpec);
+    }
+
+
+    private boolean isDerSignature(byte[] signatureBytes) {
+        try (ASN1InputStream inputStream = new ASN1InputStream(signatureBytes)) {
+            ASN1Primitive primitive = inputStream.readObject();
+
+            if (!(primitive instanceof ASN1Sequence sequence) || sequence.size() != 2) {
+                return false;
+            }
+
+            return sequence.getObjectAt(0) instanceof ASN1Integer
+                    && sequence.getObjectAt(1) instanceof ASN1Integer;
+        } catch (Exception ex) {
+            return false;
+        }
+    }
+
+    private byte[] rawRsToDer(byte[] rawSignature) {
+        if (rawSignature.length != 64) {
+            throw new IllegalArgumentException("签名无效");
+        }
+
+        byte[] r = Arrays.copyOfRange(rawSignature, 0, 32);
+        byte[] s = Arrays.copyOfRange(rawSignature, 32, 64);
+
+        ASN1EncodableVector vector = new ASN1EncodableVector();
+        vector.add(new ASN1Integer(new BigInteger(1, r)));
+        vector.add(new ASN1Integer(new BigInteger(1, s)));
+
+        try {
+            return new DERSequence(vector).getEncoded(ASN1Encoding.DER);
+        } catch (Exception ex) {
+            throw new IllegalArgumentException("签名无效", ex);
+        }
+    }
+
+    private byte[] toPointBytes(byte[] keyBytes) {
+        if (keyBytes.length == GM0018_ECCREF_PUBLIC_KEY_LENGTH) {
+            return gm0018EccRefToPointBytes(keyBytes);
+        }
+
+        return keyBytes;
+    }
+
+    private byte[] gm0018EccRefToPointBytes(byte[] keyBytes) {
+        int bitsLittleEndian = (keyBytes[0] & 0xff)
+                | ((keyBytes[1] & 0xff) << 8)
+                | ((keyBytes[2] & 0xff) << 16)
+                | ((keyBytes[3] & 0xff) << 24);
+
+        int bitsBigEndian = ((keyBytes[0] & 0xff) << 24)
+                | ((keyBytes[1] & 0xff) << 16)
+                | ((keyBytes[2] & 0xff) << 8)
+                | (keyBytes[3] & 0xff);
+
+        if (bitsLittleEndian != 256 && bitsBigEndian != 256) {
+            throw new IllegalArgumentException("公钥无效");
+        }
+
+        byte[] pointBytes = new byte[65];
+        pointBytes[0] = 0x04;
+
+        System.arraycopy(
+                keyBytes,
+                4 + GM0018_ECCREF_COMPONENT_LENGTH - SM2_COORDINATE_LENGTH,
+                pointBytes,
+                1,
+                SM2_COORDINATE_LENGTH
+        );
+
+        System.arraycopy(
+                keyBytes,
+                4 + GM0018_ECCREF_COMPONENT_LENGTH * 2 - SM2_COORDINATE_LENGTH,
+                pointBytes,
+                1 + SM2_COORDINATE_LENGTH,
+                SM2_COORDINATE_LENGTH
+        );
+
+        return pointBytes;
+    }
+
+    private byte[] gm0018SignatureToRawRs(byte[] signatureBytes) {
+        byte[] rawSignature = new byte[64];
+
+        System.arraycopy(
+                signatureBytes,
+                GM0018_ECCREF_COMPONENT_LENGTH - SM2_COORDINATE_LENGTH,
+                rawSignature,
+                0,
+                SM2_COORDINATE_LENGTH
+        );
+
+        System.arraycopy(
+                signatureBytes,
+                GM0018_ECCREF_COMPONENT_LENGTH * 2 - SM2_COORDINATE_LENGTH,
+                rawSignature,
+                SM2_COORDINATE_LENGTH,
+                SM2_COORDINATE_LENGTH
+        );
+
+        return rawSignature;
+    }
+
+
+    private byte[] decodeHexOrBase64(String value, String message) {
+        if (value == null || value.isEmpty()) {
+            throw new IllegalArgumentException(message);
+        }
+
+        if (value.matches("(?i)^[0-9a-f]+$") && value.length() % 2 == 0) {
+            return Hex.decode(value);
+        }
+
+        try {
+            return Base64.getDecoder().decode(value);
+        } catch (IllegalArgumentException ex) {
+            throw new IllegalArgumentException(message, ex);
+        }
+    }
+
+
+    private String normalize(String value) {
+        String normalized = value == null ? "" : value.trim();
+
+        if (!normalized.contains("BEGIN")) {
+            return normalized;
+        }
+
+        StringBuilder builder = new StringBuilder();
+
+        for (String line : normalized.split("\\R")) {
+            String trimmed = line.trim();
+
+            if (!trimmed.startsWith("-----")) {
+                builder.append(trimmed);
+            }
+        }
+
+        return builder.toString();
+    }
+
+
+
     private static String trim(String s){
         return s == null ? "" :  s.trim();
     }

src/test/java/com/cisd/tms/modules/log/service/OperationAuditServiceTest.java

@@ -1,5 +1,343 @@
 package com.cisd.tms.modules.log.service;
 
+import com.cisd.tms.common.enums.ErrorCode;
+import com.cisd.tms.common.exception.BizException;
+import org.bouncycastle.asn1.*;
+import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
+import org.bouncycastle.crypto.digests.SM3Digest;
+import org.bouncycastle.jce.ECNamedCurveTable;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.jce.spec.ECParameterSpec;
+import org.bouncycastle.jce.spec.ECPublicKeySpec;
+import org.bouncycastle.openssl.PEMParser;
+import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
+import org.bouncycastle.util.encoders.Hex;
+import org.junit.jupiter.api.Test;
+
+import java.io.StringReader;
+import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
+import java.security.KeyFactory;
+import java.security.PublicKey;
+import java.security.Security;
+import java.security.Signature;
+import java.security.spec.X509EncodedKeySpec;
+import java.util.Arrays;
+import java.util.Base64;
+
 class OperationAuditServiceTest {
 
+    private static final String PROVIDER = "BC";
+    private static final String SM2_CURVE = "sm2p256v1";
+
+    private static final String SIGNATURE_ALGORITHM = "SM3withSM2";
+    private static final int GM0018_ECCREF_PUBLIC_KEY_LENGTH = 132;
+    private static final int GM0018_ECCREF_COMPONENT_LENGTH = 64;
+    private static final int SM2_COORDINATE_LENGTH = 32;
+
+    static {
+        if (Security.getProvider(PROVIDER) == null) {
+            Security.addProvider(new BouncyCastleProvider());
+        }
+    }
+
+    @Test
+    public void test() {
+        String data = "f9e12235524747d7be779981494d5267_AUDIT_ADMIN_FULL_AUTH_LOGIN_172.16.18.214_SUCCESS_UKey 登录 [role=AUDIT_ADMIN, principal=uid=1]__PENDING_null_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADwG9NAMsrKVjm0oyYyDtDkJT8OPR03EuFTn+8cbWJevQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHJByEqhbLOINbNXQgOdGEUibWV+1Y3vTNX6SMY9+X9k=_2026-05-21 09:48:58";
+        String sign = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABLBYDnGWXQ1kILRDJeEx6qsQqyztWY7UNnwBfGss72UAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAmzc5T5LzKi/FfAT477Mt8gJM1tL3YUY3aqePWeWfSIc=";
+        String publickey = "AAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAf+ldxsRgzy7LoNRPAmkZFOPQyqm+oqCm+EMmgCifceoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANU1uz7nhgyo7vgyeCZJlY+eeH/vKRMWFFUGGdkD2xOQ";
+
+        verifyLoginSignature(publickey, data, sign);
+    }
+
+
+    public void verifyLoginSignature(String pubKey, String loginSignData, String loginSign) {
+        try {
+            PublicKey publicKey = parsePublicKey(pubKey);
+
+            if (loginSignData == null || loginSignData.isBlank()) {
+                throw new IllegalArgumentException("login sign data不能为空");
+            }
+
+            byte[] signatureBytes = decodeSignature(loginSign);
+
+//            String signData = sm3Hex(loginSignData.getBytes(StandardCharsets.UTF_8));
+            Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM, PROVIDER);
+            signature.initVerify(publicKey);
+
+
+            signature.update(loginSignData.getBytes(StandardCharsets.UTF_8));
+
+            if (!signature.verify(signatureBytes)) {
+                throw new BizException(
+                        ErrorCode.UNAUTHORIZED.getCode(),
+                        "login signature verification 执行失败"
+                );
+            } else {
+                System.out.println("true");
+            }
+        } catch (BizException ex) {
+            throw ex;
+        } catch (IllegalArgumentException ex) {
+            throw new BizException(ErrorCode.VALIDATE_FAILED.getCode(), ex.getMessage());
+        } catch (RuntimeException ex) {
+            throw new BizException(
+                    ErrorCode.UNAUTHORIZED.getCode(),
+                    "login signature verification 执行失败"
+            );
+        } catch (Exception ex) {
+            throw new BizException(
+                    ErrorCode.UNAUTHORIZED.getCode(),
+                    "login signature verification 执行失败"
+            );
+        }
+    }
+
+
+
+    private static String sm3Hex(byte[] data) {
+        byte[] digest = sm3(data);
+        return Hex.toHexString(digest);
+    }
+
+    private PublicKey parsePublicKey(String value) throws Exception {
+        String trimmed = value == null ? "" : value.trim();
+
+        if (trimmed.isEmpty()) {
+            throw new IllegalArgumentException("登录公钥无效");
+        }
+
+        if (trimmed.contains("BEGIN")) {
+            return parsePemPublicKey(trimmed);
+        }
+
+        String normalized = normalize(trimmed);
+        byte[] decoded = decodeHexOrBase64(normalized, "登录公钥无效");
+
+        try {
+            return KeyFactory
+                    .getInstance("EC", PROVIDER)
+                    .generatePublic(new X509EncodedKeySpec(decoded));
+        } catch (Exception ignored) {
+            return parseUncompressedPointPublicKey(toPointBytes(decoded));
+        }
+    }
+
+    private PublicKey parsePemPublicKey(String pemContent) throws Exception {
+        try (PEMParser parser = new PEMParser(new StringReader(pemContent))) {
+            Object parsed = parser.readObject();
+
+            if (!(parsed instanceof SubjectPublicKeyInfo publicKeyInfo)) {
+                throw new IllegalArgumentException("登录公钥无效");
+            }
+
+            return new JcaPEMKeyConverter()
+                    .setProvider(PROVIDER)
+                    .getPublicKey(publicKeyInfo);
+        }
+    }
+
+    private PublicKey parseUncompressedPointPublicKey(byte[] pointBytes) throws Exception {
+        if (pointBytes.length == 64) {
+            byte[] rawPointBytes = pointBytes;
+            pointBytes = new byte[65];
+            pointBytes[0] = 0x04;
+            System.arraycopy(rawPointBytes, 0, pointBytes, 1, rawPointBytes.length);
+        }
+
+        if (pointBytes.length != 65 || pointBytes[0] != 0x04) {
+            throw new IllegalArgumentException("登录公钥无效");
+        }
+
+        ECParameterSpec parameterSpec = ECNamedCurveTable.getParameterSpec(SM2_CURVE);
+
+        ECPublicKeySpec publicKeySpec = new ECPublicKeySpec(
+                parameterSpec.getCurve().decodePoint(pointBytes),
+                parameterSpec
+        );
+
+        return KeyFactory
+                .getInstance("EC", PROVIDER)
+                .generatePublic(publicKeySpec);
+    }
+
+    private static byte[] sm3(byte[] data) {
+        SM3Digest digest = new SM3Digest();
+        digest.update(data, 0, data.length);
+
+        byte[] result = new byte[digest.getDigestSize()];
+        digest.doFinal(result, 0);
+
+        return result;
+    }
+
+
+    private byte[] decodeSignature(String value) {
+        if (value == null || value.isBlank()) {
+            throw new IllegalArgumentException("login signature不能为空");
+        }
+
+        byte[] decoded = decodeHexOrBase64(normalize(value), "登录签名无效");
+
+        if (isDerSignature(decoded)) {
+            return decoded;
+        }
+
+        if (decoded.length == GM0018_ECCREF_COMPONENT_LENGTH * 2) {
+            return rawRsToDer(gm0018SignatureToRawRs(decoded));
+        }
+
+        if (decoded.length == 64) {
+            return rawRsToDer(decoded);
+        }
+
+        throw new IllegalArgumentException("登录签名无效");
+    }
+
+    private boolean isDerSignature(byte[] signatureBytes) {
+        try (ASN1InputStream inputStream = new ASN1InputStream(signatureBytes)) {
+            ASN1Primitive primitive = inputStream.readObject();
+
+            if (!(primitive instanceof ASN1Sequence sequence) || sequence.size() != 2) {
+                return false;
+            }
+
+            return sequence.getObjectAt(0) instanceof ASN1Integer
+                    && sequence.getObjectAt(1) instanceof ASN1Integer;
+        } catch (Exception ex) {
+            return false;
+        }
+    }
+
+    private byte[] rawRsToDer(byte[] rawSignature) {
+        if (rawSignature.length != 64) {
+            throw new IllegalArgumentException("登录签名无效");
+        }
+
+        byte[] r = Arrays.copyOfRange(rawSignature, 0, 32);
+        byte[] s = Arrays.copyOfRange(rawSignature, 32, 64);
+
+        ASN1EncodableVector vector = new ASN1EncodableVector();
+        vector.add(new ASN1Integer(new BigInteger(1, r)));
+        vector.add(new ASN1Integer(new BigInteger(1, s)));
+
+        try {
+            return new DERSequence(vector).getEncoded(ASN1Encoding.DER);
+        } catch (Exception ex) {
+            throw new IllegalArgumentException("登录签名无效", ex);
+        }
+    }
+
+    private byte[] toPointBytes(byte[] keyBytes) {
+        if (keyBytes.length == GM0018_ECCREF_PUBLIC_KEY_LENGTH) {
+            return gm0018EccRefToPointBytes(keyBytes);
+        }
+
+        return keyBytes;
+    }
+
+    private byte[] gm0018EccRefToPointBytes(byte[] keyBytes) {
+        int bitsLittleEndian = (keyBytes[0] & 0xff)
+                | ((keyBytes[1] & 0xff) << 8)
+                | ((keyBytes[2] & 0xff) << 16)
+                | ((keyBytes[3] & 0xff) << 24);
+
+        int bitsBigEndian = ((keyBytes[0] & 0xff) << 24)
+                | ((keyBytes[1] & 0xff) << 16)
+                | ((keyBytes[2] & 0xff) << 8)
+                | (keyBytes[3] & 0xff);
+
+        if (bitsLittleEndian != 256 && bitsBigEndian != 256) {
+            throw new IllegalArgumentException("登录公钥无效");
+        }
+
+        byte[] pointBytes = new byte[65];
+        pointBytes[0] = 0x04;
+
+        System.arraycopy(
+                keyBytes,
+                4 + GM0018_ECCREF_COMPONENT_LENGTH - SM2_COORDINATE_LENGTH,
+                pointBytes,
+                1,
+                SM2_COORDINATE_LENGTH
+        );
+
+        System.arraycopy(
+                keyBytes,
+                4 + GM0018_ECCREF_COMPONENT_LENGTH * 2 - SM2_COORDINATE_LENGTH,
+                pointBytes,
+                1 + SM2_COORDINATE_LENGTH,
+                SM2_COORDINATE_LENGTH
+        );
+
+        return pointBytes;
+    }
+
+    private byte[] gm0018SignatureToRawRs(byte[] signatureBytes) {
+        byte[] rawSignature = new byte[64];
+
+        System.arraycopy(
+                signatureBytes,
+                GM0018_ECCREF_COMPONENT_LENGTH - SM2_COORDINATE_LENGTH,
+                rawSignature,
+                0,
+                SM2_COORDINATE_LENGTH
+        );
+
+        System.arraycopy(
+                signatureBytes,
+                GM0018_ECCREF_COMPONENT_LENGTH * 2 - SM2_COORDINATE_LENGTH,
+                rawSignature,
+                SM2_COORDINATE_LENGTH,
+                SM2_COORDINATE_LENGTH
+        );
+
+        return rawSignature;
+    }
+
+    private byte[] decodeHexOrBase64(String value, String message) {
+        if (value == null || value.isEmpty()) {
+            throw new IllegalArgumentException(message);
+        }
+
+        if (value.matches("(?i)^[0-9a-f]+$") && value.length() % 2 == 0) {
+            return Hex.decode(value);
+        }
+
+        try {
+            return Base64.getDecoder().decode(value);
+        } catch (IllegalArgumentException ex) {
+            throw new IllegalArgumentException(message, ex);
+        }
+    }
+
+    private String normalize(String value) {
+        String normalized = value == null ? "" : value.trim();
+
+        if (!normalized.contains("BEGIN")) {
+            return normalized;
+        }
+
+        StringBuilder builder = new StringBuilder();
+
+        for (String line : normalized.split("\\R")) {
+            String trimmed = line.trim();
+
+            if (!trimmed.startsWith("-----")) {
+                builder.append(trimmed);
+            }
+        }
+
+        return builder.toString();
+    }
+
+    private static String bytesToHex(byte[] bytes) {
+        StringBuilder sb = new StringBuilder();
+
+        for (byte b : bytes) {
+            sb.append(String.format("%02x", b & 0xFF));
+        }
+
+        return sb.toString();
+    }
 }